US3460406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic change speed gear arrangement for motor vehicles
Assignee: Dr Ing HCF Porsche AG
•
Filing: 1967-07-25
•
Granted: 1969-08-12
•
Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Siegfried Strohm
- 👤 Erwin Pfisterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0202; F16H61/0248; F16H61/0251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2891411A
Cited
US3019666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |